What If?: Serious Scientific Answers to Absurd Hypothetical Questions

Making Science Entertaining with Explosions and Destruction

A reader comes away from Randall Munroe's book, which is subtitled "Serious Scientific Answers to Absurd Hypothetical Questions," with the sense that Munroe likes to blow things up and burn them to the ground, and that may well be the case. Many of his answers are accompanied by the standard disclaimer—do not try this at home—except when says, "If you do do this at home, please send me the video." Munroe is a former robotics expert with NASA who "dropped out" to draw web comics. His most famous creation is xkcd, where three times a week he publishes a new comic, many of them presenting a fascinating—or ludicrous—take on math, physics, technology or life. His drawing style is at once simplistic and instantly recognizable. His people are stick figures, but that doesn't diminish their cleverness. This book is illustrated with similar drawings, often to provide the punch lines to jokes delivered in the text or to demonstrate a point. Since he's obviously very clever and resourceful, and seems willing to tackle enormous questions, his readers and fans often ask him questions. Some of these are, quite frankly, disturbing. These he relegates to interludes between batches of chapters with the appropriate heading "Weird (and Worrying) Questions from the What If? Inbox." Usually he answers these questions with a simple NO! or a scream, or a comic of the author reporting the questioner to the police, the FBI or Homeland Security. The other questions are of the sort that college kids might come up with late at night in dorm rooms or geeks would get into heated arguments over at ComicCon. No one asks Munroe who would win in a fight between this superhero and that one, but maybe he's keeping those for the follow-up. Many questions are about a matter of scale. How many of these objects would you need to do that? What would happen if something this big suddenly showed up or plummeted to the earth? A disturbingly large number of them ask what would happen to a person if something...